ng serve recompile time very slow

Using ‘ng serve’ the webpack compile and recompile on code changes takes sometimes more than a minute.

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request

Versions.

@angular/cli: 1.0.0 node: 7.6.0 os: darwin x64 @angular/common: 4.0.3 @angular/compiler: 4.0.3 @angular/core: 4.0.3 @angular/forms: 4.0.3 @angular/http: 4.0.3 @angular/platform-browser: 4.0.3 @angular/platform-browser-dynamic: 4.0.3 @angular/router: 4.0.3 @angular/cli: 1.0.0 @angular/compiler-cli: 4.0.3

Repro steps.

1. ng serve
2. make change to any file (json, ts, html)
3. wait for browser to reload…

The log given by the failure.

$xxxx ng serve ** NG Live Development Server is running on http://localhost:4200 ** Hash: 15921d5ca032c405df0a
Time: 43310ms chunk {0} polyfills.bundle.js, polyfills.bundle.js.map (polyfills) 231 kB {5} [initial] [rendered] chunk {1} main.bundle.js, main.bundle.js.map (main) 389 kB {4} [initial] [rendered] chunk {2} scripts.bundle.js, scripts.bundle.js.map (scripts) 515 kB {5} [initial] [rendered] chunk {3} styles.bundle.js, styles.bundle.js.map (styles) 11.4 kB {5} [initial] [rendered] chunk {4} vendor.bundle.js, vendor.bundle.js.map (vendor) 3.61 MB [initial] [rendered] chunk {5} inline.bundle.js, inline.bundle.js.map (inline) 0 bytes [entry] [rendered] webpack: Compiled successfully. webpack: Compiling… Hash: 74ff0fd808586e648c85
Time: 52972ms chunk {0} polyfills.bundle.js, polyfills.bundle.js.map (polyfills) 231 kB {5} [initial] chunk {1} main.bundle.js, main.bundle.js.map (main) 389 kB {4} [initial] [rendered] chunk {2} scripts.bundle.js, scripts.bundle.js.map (scripts) 515 kB {5} [initial] chunk {3} styles.bundle.js, styles.bundle.js.map (styles) 11.4 kB {5} [initial] chunk {4} vendor.bundle.js, vendor.bundle.js.map (vendor) 3.61 MB [initial] chunk {5} inline.bundle.js, inline.bundle.js.map (inline) 0 bytes [entry] webpack: Compiled successfully.

Desired functionality.

Compile and reload in 3-5 seconds or so

Mention any other details that might be useful.